Do cosmological data favor neutrino mass and Dark Energy coupled to Dark Matter?

por Giuseppe La Vacca (Università Milano-Bicocca & INFN)

martes 19 ene. 2010 12:30 → 13:30 Europe/Madrid

Sala Seminarios IFIC (Edf. Institutos de Investigación)

We consider cosmological models with dynamical Dark Energy (DE) coupled to Cold Dark Matter (CDM), while simultaneously allowing neutrinos to be massive. We compare these models with a wide range of cosmological data and find a strong correlation between coupling and neutrino mass. According to data, the statistically most favored models allow a strong coupling between CDM and DE, and a neutrino mass high enough to agree with the (claimed) result of the Heidelberg-Moscow experiment and however detectable soon by the KATRIN experiment. A cosmology with uncoupled DE keeps however within 2 sigma. But, should neutrino experiments detect a mass in the expected range, cosmologies with two independent dark component are excluded at > 4 sigma.